kernel/machine/hosted/Vga.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef MACHINE_HOSTED_VGA_H
#define MACHINE_HOSTED_VGA_H

#include "pedigree/kernel/machine/Vga.h"

class HostedVga : public Vga
{
  public:
    HostedVga();
    virtual ~HostedVga();

    virtual void setControl(VgaControl which);

    virtual void clearControl(VgaControl which);

    virtual bool setMode(int mode);

    virtual bool setLargestTextMode();

    virtual bool
    isMode(size_t nCols, size_t nRows, bool bIsText, size_t nBpp = 0);

    virtual bool isLargestTextMode();

    virtual size_t getNumCols()
    {
        return m_nWidth;
    }

    virtual size_t getNumRows()
    {
        return m_nHeight;
    }

    virtual void rememberMode();

    virtual void restoreMode();

    virtual void pokeBuffer(uint8_t *pBuffer, size_t nBufLen);

    virtual void peekBuffer(uint8_t *pBuffer, size_t nBufLen);

    virtual void moveCursor(size_t nX, size_t nY);

    bool initialise();

    operator uint16_t *() const
    {
        return m_pBackbuffer;
    }

  private:
    HostedVga(const HostedVga &);
    HostedVga &operator=(const HostedVga &);

    static void printAttrAsAnsi(uint8_t attr);

    static uint8_t ansiColourFixup(uint8_t colour);

    size_t m_nWidth;

    size_t m_nHeight;

    size_t m_CursorX;

    size_t m_CursorY;

    int m_ModeStack;

    int m_nMode;

    uint8_t m_nControls;

    uint16_t *m_pBackbuffer;
};

#endif